JOURNAL OF APPLIED POLYMER SCIENCE
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2026
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IF 2.8
Zhangxu Chen,Fanli Meng,Hongyun Ren,Lifen Zhang,Minglian Fu,Danchen Zhu
A key factor limiting the photocatalytic performance of pure graphitic carbon nitride (g-C 3 N 4 ) is the swift recombination of photogenerated electron–hole pairs. To address this issue, the ZnO/g-C 3 N 4 composites were synthesized via a one-step calcination method. Their structure, composition, and morphology being characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). An L 16 (4 5 ) orthogonal array was employed to investigate the effects of various factors on the removal efficiency. The results exhibit that under optimal conditions (sunlight irradiation time: 20.0 h, pH: 7.00, catalyst dosage: 40 mg, ZnO/g-C 3 N 4 mass ratio: 4:1), the methylene blue removal rate reached 92.36%. Comparative experiments demonstrated removal efficiencies of 43.64% for phenol, 52.13% for tetracycline, and 40.26% for pyridine, respectively. Moreover, the removal rate of methylene blue can still reach 90.12% after five cycles. Trapping experiments for active species confirmed that photogenerated electrons and holes are critical for methylene blue degradation. ZnO doping g-C 3 N 4 improves the methylene blue removal performance of g-C 3 N 4 , providing a facile strategy for developing g-C 3 N 4 /metal oxide heterostructure to deal with emerging contaminants in the future.
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高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2015
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IF 2.133
Xinshan Rong,Fengxian Qiu,Jian Rong,Jie Yan,Hao Zhao,Xiaolu Zhu,Dongya Yang
A series of porous g-C 3 N 4 /La (PGCN/La) materials used as photocatalyst for the degradation of phenol were prepared by two steps. The photocatalysts were characterized by X-ray diffraction (XRD), UV–vis diffuse reflectance spectroscopy (DRS), thermogravimetry (TG), Brunauer–Emmett–Teller (BET), Scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). From the TEM morphology, the porous structure of g-C 3 N 4 could be successfully controlled; from BET results, BET specific surface area of porous g-C 3 N 4 (PGCN) sample increases with the increasing of urea mass ratio. Compared with PGCN material (PGCN-50), PGCN/La sample (PGCN-50/La-5) could exhibit an enhanced photocatalytic activity and has the best degradation efficiency of 98.6% within 50 min under visible light irradiation. Photocatalytic reaction follows the first-order model kinetics ; and PGCN-50/La-5 photocatalyst shows the largest reaction rate among all samples which is nearly 2.96 times higher than that of pure PGCN-50. The present work illustrates that the photocatalytic activity of porous g-C 3 N 4 was improved by the addition of La and PGCN-50/La-5 has potential application in the removal of phenol or other organic molecular from wastewater.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2017
·Vol. 42
·期 17
·12210-12219
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IF 3.582
Tianjun Chen,Chengjie Song,Mingshan Fan,Yuanzhi Hong,Bo Hu,Longbao Yu,Weidong Shi
In this work, novel CuS/g-C 3 N 4 composite photocatalysts were successfully prepared via a simple in-situ growth method. CuS nanoparticles , with an average diameter of ca.10 nm, were well dispersed on the surface of g-C 3 N 4 , revealing that g-C 3 N 4 nanosheets were promising support for in-situ growth of nanosize materials. The CuS/g-C 3 N 4 composites exhibited highly enhanced visible light photocatalytic H 2 evolution from water-splitting compared to pure g-C 3 N 4 . The optimum photocatalytic activity of 2 wt% CuS/g-C 3 N 4 composite photocatalytic H 2 evolution was about 13.76 times higher than pure g-C 3 N 4 . The enhanced photocatalytic activity is attributed to the interfacial charge transfer (IFCT). In this system, electrons in the valence band (VB) of g-C 3 N 4 can transfer directly to CuS clusters, causing the reduction of partial CuS to Cu 2 S, which can act as an electron sink and co-catalyst to promote the separation and transfer of photo-generated electrons. The accumulated photoinduced electrons in CuS/Cu 2 S clusters could effectively reduce H + to produce H 2 . This work provides a possibility for constructing low-cost CuS as a substitute for noble metals in the photocatalytic production of H 2 via a facile method based on g-C 3 N 4 .
研究领域:
材料科学
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光催化
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氢能
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纳米复合材料
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可再生能源
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高影响因子
CHEMOSPHERE
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2023
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IF 8.8
P. Velusamy,Xinghui Liu,M. Sathiya,Norah Salem Alsaiari,Fatimah Mohammed Alzahrani,M. Tariq Nazir,Elangovan Elamurugu,M. Senthil Pandian,Fuchun Zhang
The two-step thermal polymerization and solvothermal approach is used to construct nano heterostructures of FCN and BiOI (bismuth oxeye iodide), both of which are Nobel metal-free materials. This work reports the effect nano-heterostructure on the micro-structural, light absorption capability, PEC properties and pollutant degradation efficiency of the synthesised heterostructures . The addition to that formation of FCN/BiOI nano-heterostructure enhances the solar light absorption. The FCN/BiOI nano heterostructure shows 10 times higher photocurrent density than the BCN nanostructure and 3.8 time higher that FCN. The FCN/BiOI has a high induced photo-current density (20.17 mA/cm 2 ) and H 2 evolution rate (3762 μmol h −1 cm −2 ) under solar light illumination (λ ≥ 420 nm) in comparison with the other. Furthermore, the photocatalytic performance of this material for the breakdown of methyl red dyes was much greater. Under solar light irradiation , the azo dyes were degraded in 90 min. The FCN/BiOI nano-heterostructure has a higher dye degradation efficiency of 97.91%. The rapid transport of photo-induced electrons in the FCN/BiOI nanocomposite is responsible for the improvement in PEC and PC performances. These impressive findings suggest that this nanocomposite might be used to facilitate the PEC water splitting and the PC degradation of MR in the presence of light. The current research provides insight on how to best tailor composition and structure for efficient FCN photo-electrocatalysis water splitting and Methyl red dye degradation.
研究领域:
材料科学
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光催化
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能量转换
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环境修复
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纳米材料
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光电化学
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
·
IF 9.1
Liwei Ma,Heting Li,Shaonan Shan,Yanqing Qin,Xu Yang,Guoqiang Li,Guojie Zhang
Wet Fe(II)EDTA complexation is a promising technology for NO removal, but its practical application is severely hindered by O 2 -induced oxidation of Fe(II)EDTA and inefficient regeneration of Fe(II)EDTA–NO. Herein, an oxygen-vacancy-rich BiOCl/g-C 3 N 4 S-scheme heterojunction with interfacial Bi–O–C covalent bonds was constructed for oxygen-resistant photocatalytic–complexation denitrification. Structural characterizations and density functional theory calculations confirmed that Bi–O–C bonds served as atomic-level charge-transfer channels, strengthening interfacial coupling and promoting directional S-scheme charge separation. This configuration preserved strongly reductive electrons on g-C 3 N 4 for the reduction of Fe( III )EDTA and Fe(II)EDTA–NO, while retaining oxidative holes on BiOCl. Meanwhile, oxygen vacancies on BiOCl acted as preferential O 2 adsorption and activation sites, converting O 2 into ·O 2 − and thereby transforming O 2 from a competitive oxidant into an electron-buffering species that suppresses BiOCl photocorrosion and regulates interfacial redox cycling. The optimized 20BCN–Fe( II )EDTA system achieved an average NO removal efficiency of 88.92% under 14% O 2 and maintained above 80.02% efficiency after 30 cycles. Product analysis revealed a reduction-dominated NO conversion pathway, with NH 4 + and N 2 as the major reduced nitrogen products, a total reduced-product selectivity of 91.9%, and a nitrogen recovery of 94.4%. Kinetic analysis confirmed that NO absorption proceeded in a fast reaction regime enhanced by interfacial redox reactions. This work provides an atomic-level strategy for designing oxygen-resistant photocatalytic systems for wet denitrification under realistic flue-gas conditions.
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高影响因子
LANGMUIR
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2026
·
IF 4.4
Qiqi Gan,Xiao Feng,Dejun Wang,Yanhong Lin,Tengfeng Xie
In the heterogeneous photo-Fenton-like system, enhanced separation and migration of photogenerated charge carriers can further accelerate the redox cycle of metal ions and promote both H2O2 activation and the generation of reactive oxygen species (ROS). In this work, copper-loaded carbon nitride with nitrogen vacancies (Cu-Nv-CN) was synthesized. Cu-Nv-CN exhibits outstanding heterogeneous photo-Fenton-like activity, 94.0% of tetracycline (TCH) is eliminated within 50 min in the presence of 10 mM H2O2, and the corresponding degradation rate constant reached 0.0522 min–1. Surface photovoltage and femtosecond transient absorption (TA) spectroscopy measurements revealed that Cu sites act as effective electron trapping centers. Furthermore, the introduction of Nv drives the rapid migration of photogenerated electrons to the Cu sites. The synergistic interplay between these two factors significantly improves the utilization efficiency of photogenerated charge carriers. The photo-Fenton-like pollutant degradation mechanism of Cu-Nv-CN was systematically elucidated by combining radical trapping experiments, electron paramagnetic resonance (EPR) spectroscopy, and X-ray photoelectron spectroscopy (XPS) measurements. This study proposes a viable strategy for boosting the catalytic activity of graphitic carbon nitride-based photocatalysts in advanced photo-Fenton-like systems.
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PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
·
IF 9.1
Wei Gan,Ruixin Chen,Li Zhang,Jun Guo,Naidong Chen,Wei Liu,Minfu Zhao,Zhaoqi Sun,Haihong Niu,Xucheng Fu
The combination of peroxymonosulfate (PMS) activation and photocatalytic process was an ideal approach for removing persistent organic pollutants. Here, we constructed a single-atom Co-modified S-scheme heterojunction (0.5CoCN/TiO 2 ) to achieve efficient photoexcitation synergistic PMS activation. Comprehensive characterization and theoretical calculation verified that the addition of Co atoms could strengthening the built-in electric field (BIEF) in heterojunction, which accelerates the rearrangement of Co(III)/Co(II). Meanwhile, the Co atoms bonded with the O in PMS accelerate the adsorption of PMS and facilitate the migration of photoexcitation electrons from CoCN to PMS, thereby boosting the generation of reactive oxygen species (ROS). Furthermore, Co atoms optimized the configuration of active sites, facilitating the simultaneous occurrence of non-radical pathways. Driven by the synergistic effects of Fenton-like reactions and photocatalytic reactions, the optimal heterojunction delivered outstanding catalytic activity, degrading 97.2% of sulfadiazine at a low PMS concentration. This research provides a novel strategy to promote the removal of environmentally persistent pollutants via photo-assisted PMS activation.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Yulong Sui,Chulei Zhao,Xuewen Qu,Rutong Yang,Hui Zhu
Graphitic carbon nitride (g-C 3 N 4 ) recently has attracted considerable attention in the field of capacitive deionization (CDI) due to its tunable electronic structure and low synthesis cost. However, the practical application of this material is severely hindered by a critical bottleneck of failure to balance the trade-off between desalination capacity and cycling stability. This bottleneck mainly stems from two key issues, namely insufficient exposed active sites and material corrosion induced by hydrogen peroxide (H 2 O 2 ). In this work, atomically dispersed manganese-doped g-C 3 N 4 material (Mn/g-C 3 N 4 ) was successfully prepared. Mn/g-C 3 N 4 delivers an ultrahigh desalination capacity of 149.86 mg/g and maintains long-term stability with no significant capacity decay (>90%) after 150 cycles at an applied voltage of 1.2 V, which outperforms most g-C 3 N 4 -based materials. Ex-situ characterizations and electrochemical measurements confirm that isolated manganese sites not only act as high-density Na + trapping sites to enhance ion adsorption capacity, but also effectively suppresses H 2 O 2 formation by altering the ORR pathway, thus alleviating the anodic oxidative corrosion. The present work provides a novel perspective to construct CDI electrode of high capacity and stability with integration of desalination and ORR catalytic function.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
IF 6.7
Yunlong Lan,Chao Deng,Qiaoping Kong,Chuanxi Yang,Bingrui Ma,Erling Zhao,Xiaoning Wang,Yongkun Wu,Liping Xiao
Nowadays, industrial wastewater contains abundant refractory organic pollutants, which seriously threaten ecological environment and human health. As an eco-friendly and efficient technology, photocatalysis is a promising approach for wastewater purification. Nevertheless, the rapid recombination of photogenerated carriers greatly limits the practical application of conventional photocatalysts. Introducing oxygen vacancies (OVs) into photocatalysts is an effective strategy to solve this problem and improve photocatalytic activity. In this study, we facilely synthesized 0D/2D BiOBr-OVs/g-C 3 N 4 heterojunction by a one-pot solvothermal method, which was composed of zero-dimensional (0D) oxygen vacancy BiOBr-OVs and two-dimensional (2D) g-C 3 N 4 components. The 0D/2D heterojunction exhibited enhanced visible-light degradation for the hazardous pollutant 1-naphthoic acid. And its removal rate by 0D/2D composites was up to 76.3% after 100 min of irradiation, which was 1.61 and 1.45 times those of 2D g-C 3 N 4 and 0D BiOBr-OVs. The noticeably increased removal efficiency of 0D/2D composites for 1-naphthoic acid was attributed to the rational utilization of oxygen vacancies to promote charge carrier separation. And the tight bonding between components also contributed to photoinduced carrier migration and exerted a synergistic effect for photocatalysis. Possible degradation pathways were proposed for the intermediates via gas chromatography-mass spectrometry (GC-MS) qualitative analysis, and their toxicity was evaluated using the Toxicity Estimation Software Tool (T.E.S.T.). This paper provides an innovative approach for one-step manufacture of 0D/2D nanojunctions with oxygen vacancies, and advances to prospective organic photodegradation applications.
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高影响因子
IRANIAN POLYMER JOURNAL
·
2026
·
IF 2.9
Wang Zehu,Zhang Xiaoliang,Wang Yanming,Yue Xuan
As a typical endocrine disrupter, bisphenol A (BPA) could damage the reproductive and endocrine systems of humans and mammals. Therefore, the precise removal of BPA from the environment becomes increasing urgent. In this work, we employ Pickering emulsion polymerization to prepare the molecularly imprinted polymers (MIPs) microspheres through the non-covalent molecular imprinting strategy, which contain specific binding sites for the precise recognition of BPA. Graphite-carbon nitride (g-C 3 N 4 ) possesses a unique interfacial characteristic and is expected to develop potential application in the field of Pickering emulsion polymerization. In the process of polymerization, g-C 3 N 4 nanosheets are used as the sole emulsifier to build the Pickering oil/water emulsion system followed by the thermal-induced radical polymerization. The template molecules of BPA could be eluted from the polymer microspheres by continuous soxhlet extraction. The obtained MIPs microspheres were characterized with the help of optical microscope and field emission scanning electron microscope, respectively. The MIPs microspheres present regularly spherical structure with a relative broad size distribution. The formation of imprinted sites on the MIPs was validated through a batch of rebinding experiments, including the binding kinetics, binding isotherm, selective experiment and competitive experiment. The MIPs microspheres would have broad application prospect in environmental and analytical fields. Graphical abstract
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高影响因子
ACS Applied Polymer Materials
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2026
·
IF 5.2
Kavya Adot Veetil,Senthil Kannan,Eun Kyu Sun,Md. Homayun Kabir,Ook Choi,Tae-Hyun Kim
Integrating nanomaterials with tunable surface functionalities into polymer matrices offers a promising route for developing high-performance mixed matrix membranes (MMMs). Among these, graphitic carbon nitride (g-C3N4) facilitates gas transport and enhances membrane permeability due to its intrinsic nanopores. However, while improving the CO2 permeability, pristine g-C3N4 often compromises the CO2/CH4 selectivity. To address this trade-off, iron-doped g-C3N4 (Fe-g-C3N4) was incorporated into a polymer of intrinsic microporosity (PIM-1), possessing a high free volume and excellent gas diffusion characteristics. Iron doping served to increase the CO2-philicity of g-C3N4 and strengthen its interaction with the CO2 molecules, thereby improving both permeability and selectivity. The resulting Fe-g-C3N4/PIM-1 MMMs demonstrated enhanced CO2 permeability and CO2/CH4 selectivity, indicating their potential for use in CO2 separation applications. Incorporating 0.5 wt % Fe-doped g-C3N4 into the PIM-1 matrix led to a 38.5% increase in CO2 permeability compared to pristine PIM-1 and a 12.7% improvement over the undoped g-C3N4-based MMM. While undoped g-C3N4 reduced the CO2/CH4 selectivity, Fe doping had the reverse effect, enhancing the selectivity by 7.2% relative to the undoped system. Notably, the Fe-g-C3N4/PIM-1 MMMs approach the 2008 Robeson upper bound for the CO2/CH4 separation. In addition, the membrane exhibited improved mechanical strength and antiaging and antiplasticization characteristics, collectively outperforming pristine PIM-1.
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高影响因子
FUEL
·
2026
·
IF 7.8
RuoKun Jia,TianXiang Li,PengPeng Wang,DuMin Li,JiaHui Chen,XiaoHang Yang,QingXiao Zhao,Xin Cheng,LingYun Zhang,Xiaoxi Liu
A Cu: MoO 3 /g-C 3 N 4 binary heterojunction photocatalyst was synthesized via a hydrothermal method, achieving a light response that covers nearly the entire visible region. The material shows a strong, broad absorption band from 400 to 700 nm, significantly improving its visible-light harvesting and utilization efficiency. Optimization of the g-C 3 N 4 , Cu, and Mo molar ratios further enhanced the catalyst’s redox performance under visible-light irradiation. Through combined XPS, UV–vis, and in situ DRIFTS characterizations, it was verified that the Cu: MoO 3 /g-C 3 N 4 photocatalyst possesses a wide visible-light absorption range and effectively transforms absorbed long-wavelength photons into photogenerated electron-hole pairs, thereby facilitating the separation and transfer of charge carriers. Due to the simultaneous enhancement of broad-spectrum light capture and charge separation/transfer efficiency, this catalyst demonstrates excellent catalytic activity in visible light-driven CO 2 conversion, with a maximum methanol production rate of 102.52 μmol·g −1 ·h −1 . This work verifies the feasibility of efficient visible light-driven CO 2 conversion and provides a viable design approach and reference for constructing multi-metal-based photocatalysts with full visible light response.
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